Question for the Pros - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

emsguy · 01-17-2012, 06:53 PM

I have an 2012 L99. I know I have an engine control module (ECM). Do I have a separate control module to control the transmission, or is it part of the ECM? Is it part of the transmission itself? Where does the little beggar reside?

I looked on the GM Parts Warehouse website (a forum sponsor, naturally) and could find only the ECM.

All help greatly appreciated. Unfortunately, no prize for the right answer. Sorry.

diamondmike · 01-17-2012, 07:16 PM

in the tranny pan

MikeOD · 01-17-2012, 07:26 PM

Yeah, they are separate and they talk to each other...far as I know in the auto trans cars, it's in the tranny pan as diamondmike said.

emsguy · 01-17-2012, 07:33 PM

Quote:

Originally Posted by MikeOD

Yeah, they are separate and they talk to each other...far as I know in the auto trans cars, it's in the tranny pan as diamondmike said.

can you buy one separately or do you have to buy the entire transmission?

MikeOD · 01-17-2012, 07:52 PM

I have no idea...I guess you'd have to ask the parts guy at a dealer?

Is yours not working? Isn't the car in warranty?

KRich2587 · 01-18-2012, 07:33 PM

im a tech for bmw and some of our cars use GM trannys, the trans ecu is built into the valve body, you can replace it seperately however after replacing it you have to program it to work with the vehicle. im assuming the camaro tranny will be the same

The Stig · 01-18-2012, 08:32 PM

The control modules are VIN specific, so they can't really be transferred between camaros.

SRT10KLLR · 01-18-2012, 09:15 PM

Quote:

Originally Posted by emsguy

can you buy one separately or do you have to buy the entire transmission?

Yes, you can buy them separate. I bought one a couple months ago for $500 at the dealer. I will look for the receipt to give you a part number.

Quote:

Originally Posted by stieger

The control modules are VIN specific, so they can't really be transferred between camaros.

When I bought a spare 6L80 from a crashed Camaro all it required was to reflash the computer with HPT. Ran the spare while the original one was builg built by Circle D. They told me the TCM in the stock tranny was bad so I bought a new one from the dealer. Swapped the built tranny in and it is up and running without issue.

01-17-2012, 06:53 PM	#1
emsguy Drives: 2012 2ss convertible Join Date: Jul 2011 Location: illinois Posts: 303	Question for the Pros I have an 2012 L99. I know I have an engine control module (ECM). Do I have a separate control module to control the transmission, or is it part of the ECM? Is it part of the transmission itself? Where does the little beggar reside? I looked on the GM Parts Warehouse website (a forum sponsor, naturally) and could find only the ECM. All help greatly appreciated. Unfortunately, no prize for the right answer. Sorry.

01-17-2012, 07:16 PM	#2
diamondmike Drives: 2SS/RS Join Date: Nov 2009 Location: Destin, fl Posts: 441	in the tranny pan __________________ 7.83 @ 172 and 1.15 60ft 5th gen 4.93@143

01-17-2012, 07:26 PM	#3
MikeOD Drives: 2010 M6 2SS Join Date: Mar 2011 Location: South Windsor, CT Posts: 1,202	Yeah, they are separate and they talk to each other...far as I know in the auto trans cars, it's in the tranny pan as diamondmike said. __________________ 2010 Camaro SS M6. Heads/Cam/Intake/Headers/Exhaust/Suspension

01-17-2012, 07:52 PM	#5
MikeOD Drives: 2010 M6 2SS Join Date: Mar 2011 Location: South Windsor, CT Posts: 1,202	I have no idea...I guess you'd have to ask the parts guy at a dealer? Is yours not working? Isn't the car in warranty? __________________ 2010 Camaro SS M6. Heads/Cam/Intake/Headers/Exhaust/Suspension

01-18-2012, 08:32 PM	#7
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	The control modules are VIN specific, so they can't really be transferred between camaros. __________________

01-18-2012, 07:33 PM	#6
KRich2587 Drives: 2014 Summit White 1LE Join Date: Jan 2012 Location: Temple, TX Posts: 432 View My Garage	im a tech for bmw and some of our cars use GM trannys, the trans ecu is built into the valve body, you can replace it seperately however after replacing it you have to program it to work with the vehicle. im assuming the camaro tranny will be the same

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